Objectives: Diet and exercise therapy form the basis of treatment of type 2 diabetes mellitus(T2DM).The objective of this study was to evaluate the effects of diet and physical activity interventions for patients with T2DM.

Methods: We assessed the prospective association between levels of physical activity, diet and quality of life(QOL) in patients with T2DM.We measured body mass index (BMI),waist hip ratio and QOL index (SF-36). A total of 300 patients(169 women and 131 men)were enrolled in the study.